🧩 ASA+PMMA – Acrylate Styrene Acrylate + Acrylate (PMMA)
(Premium aesthetic material with deep gloss and excellent UV resistance, obtained by combining ASA with PMMA. Ideal for visible exterior parts, mirrors, frames, caps, and decorative automotive components.)
🔹 What is ASA+PMMA
ASA+PMMA is a latest-generation acrylic blend resulting from the combination of ASA (UV resistance and color stability) and PMMA (Polymethyl Methacrylate — for gloss, hardness, and optical clarity).
The result is a glossy, weather-resistant plastic that resists scratches and solar radiation, highly valued in aesthetic automotive applications. Compared to simple ABS or ASA, ASA+PMMA offers a superior finish, higher hardness, and a color that does not fade over time.
🔧 Composition
- ASA (Acrylate Styrene Acrylate) – 40–60 %
- PMMA (Acrylate) – 40–60 %
- UV Additives / Stabilizers – 1–5 %
- Density: 1.08–1.12 g/cm³
- Melting Point: ≈ 240–260 °C
- UV Resistance: Excellent.
- Impact Resistance: Good, even at low temperatures.
🚗 Where ASA+PMMA is used in the automotive industry
| Component | Example parts | Observations |
| Body Exterior | Mirror caps, frames, headlight housings | Glossy finish, extreme UV resistance |
| Premium Interior | Inserts, covers, glossy accents | Acrylic look, stable gloss |
| Bodywork / Tuning | Decorative elements, custom caps | Does not fade, polishable |
| Accessories | Emblem housings, diffusers | Tough and aesthetic |
🔧 Welding Temperature and Methods
| Method | Optimal Temperature | Observations |
| Hot Air | 250 – 270 °C | Clean weld, no loss of gloss |
| Heat Plate (Mirror) | 240 – 260 °C | Ideal for flat joints |
| Manual Extrusion | 230 – 250 °C | For mounts and fine cracks |
🔩 What to Weld ASA+PMMA With (Material Compatibility)
Being a 100% acrylic material, ASA+PMMA is compatible with ASA, PMMA, and ABS+PMMA, maintaining good adhesion and a clear finish.
✅ Compatible with:
- ASA+PMMA ↔ ASA+PMMA / ASA / PMMA / ABS+PMMA – ideal combination.
- ASA+PMMA ↔ ABS+ASA / ABS+SAN / PC/ABS – good compatibility.
- ASA+PMMA ↔ PS-HI / HIPS – partially compatible.
❌ Incompatible with:
- PP, PE, PA, PVC – completely different melting points.
💡 ReplastMD Recommendation:
Use ASA+PMMA or ABS+PMMA rods at a temperature of 260–270 °C. Heat gradually, avoiding overheating which can dull the PMMA layer. After welding, apply a short blast of hot air and fine polish to restore the original gloss.
🏭 Manufacturers and Trade Names
- Chi Mei: Kibilac® ASA/PMMA
- LG Chem: LUPOY® AM / ASA+PMMA
- INEOS Styrolution: Luran® S / Terblend® AM
- SABIC: Cycolac® ASA-PMMA
- Trinseo: Magnum™ ASA-PMMA
🧠 How to Identify ASA+PMMA
- Engraved marking: >ASA+PMMA<, >PMMA/ASA<, >ACRYL-ASA<.
- Glossy, rigid, scratch-resistant surface with a smooth outer layer.
- Yellow-blue flame, faint acrylic scent.
- Softens at ≈ 250 °C without bubbling.
- Highly resistant to scratching and fading.
🛠️ ASA+PMMA Welding at ReplastMD:
At our service center in Chisinau (Ciocana sector), ReplastMD performs professional ASA+PMMA welding for frames, caps, and decorative parts, providing an invisible, glossy, and sun-stable finish.